To this end, this website uses cookies that generate analytical statistics about the use of our website. The phenolic resin of claim 1 wherein the liquid phenolic resole resin has a free moisture content of about 8 weight percent or less. Varcum 29159 is a liquid onestep, phenolic resin in a mixture of xylol and. Phenolformaldehyde resin chemical compound britannica. Durez phenolic engineering resin sbna engineering phenolics are moulding materials of phenolic resins compounded with a wide variety of fillers, including glass fibre, minerals and cellulose. We offer phenolic resins as binder for friction materials which are used for brake linings, disc brake pads, clutch plates of transmission and others with superior heat resistance and adhesive performance. In other words, all said additives promoted cure and above all, the novolac type resorcinol resin a proved to be most effective for these curing periods. Take time to consult our cookie policy for more information on the cookies we use and how to delete or block them. Through durez, we are able to offer a broad line of standard and customdesigned products that exhibit outstanding performance. The polymerization reaction of phenol with formaldehyde is used to commercially prepare phenolic resins. Following two resins were sourced from sumitomo bakelite europe n. Seferis polymeric composites laboratory, department of chemical engineering, university of washington box 351750, seattle, washington, united states of america summary. It is recommended as a softener in compounding nbr stocks and will impart reinforcement. The area under tan delta curves during dma isothermal scans of such samples decreased as the degree of precure increased.
Phenolic resins are also used for making exterior plywood commonly known as weather and boil proof wbp plywood because phenolic resins have no melting point but only a decomposing point in the temperature zone of 220 c 428 f and above. Improving customer productivity has been the akrochem goal since we began serving the rubber and plastic industries in 1929. The plant manufactures phenolic resins and phenolic moulding compounds. Phenolic phenolformaldehyde resins are well known to have excellent flame retardance, good heat resistance, and low smoketoxic gas evolution on burning 5. Fire performance evaluation of different resins for potential. Fire performance evaluation of different resins for potential iafss. It should be noted that the resin akrochem p49 and p86 portion of reinforcing phenolic resins is only a moderate tackifier. Features excellent compatibility with modifying agents. Phenolic resins are prepared using acidic or basic catalysts. Low dust level versions of plenco phenolic resins are available also. Durez canadas 2012 toxics substance reduction plan summary. Phenolic resins technology handbook 2nd revised edition. This book basically deals with general reaction of phenols with aldehydes, the resoles, curing stages of.
Phenolic resin is used as a binder in loudspeaker driver suspension components which are made of cloth. This page has links to all data sheets in matweb for the tradename durez. Lignin economics will be a factor for its potential use in phenolic resins. Cyanate, epoxy, a1 lyl, acrylate, methacrylate and.
Drt90 tp and 100 tp are stored in 25 kg, hdpe woven bags. Request pdf development of vinyl ester resins with improved flame. Pdf characterization of a novolac resin substituting phenol by. The resulting materials are designed to meet some of the most demanding engineering requirements. Practical guidelines for the efficient postbaking of molded phenolics by theodore n. Phenolic novolac and resol resins phenolic thermosetting resin. Phenolic, injection grade, durez 23570 black phenolic is a glass and mineral filled twostage, special purpose molding material. Phenolic resins market size, share industry trend report. Description varcum 29101 is a onestep lump phenolic resin. Durez 175 is recoomended for use in nitrile rubber solvent cements. It is designed for high strength, good dimensional stability, and electrical properties even after long term exposure to. Description durez 29095 is an oilsoluble, thermoplastic, phenolic tackifier resin supplied in flake form.
Pdf the characteristics of oxalic acid catalyzed phenolic resins, synthesized using the conventional heating method and by a onepot. Part of the global sumitomo bakelite phenolic resin portfolio, durez is the industry leader in thermoset resins used in the adhesives, specialty coatings, abrasive, rubber and. Also, phenolic resins is used in flame retardant which is very crucial for automobiles and aircrafts. Based on these findings, the smarttrac system can be used to control the cure state of this or similar phenolic compounds.
In the method phenol and formaldehyde at an initial ph of 8. Phenolic resins continue to be an important bonding agent for a diversity of uses encompassing the joining of metals, glasses, wood, paper, rubber to other substrates with favorable costperformance characteristics that surpass most other polymeric resins. Method for accelerating cure of resole type phenolic resins. Phenolic resins for binding inorganic materials and thermal insulating applications which are easy to use and offer superior heat resistance, high mechanical strength, flame retardancy and workability. Us4031276a preparation of densified wood impregnated with. Development of vinyl ester resins with improved flame retardant. Uses of phenol with the phenolic resins and their applications. Mechanical property data sumitomo bakelite durez 12686 phenolic novolac, sumitomo bakelite durez 12687 cnsl phenolic resin, sumitomo bakelite.
In this study, phenolformaldehyde resins catalyzed with sodium hydroxide. Sbhpp phenolic resins are used as binder for the manufacturing of wood and electrical laminates. Phenolic resin, durez 37 is a viscous thermoplastic phenolic resin that requires the addition of hexamethylenetetramine to atttain thermosetting properties. Phenolformaldehyde resin, also called phenolic resin, any of a number of synthetic resins made by reacting phenol an aromatic alcohol derived from benzene with formaldehyde a reactive gas derived from methane. The escalating cost of energy and its impact on phenolic resin raw materials, resin production, and processing of phenolic resins by customers is of paramount importance. There is no discernable relationship between impedance data and surface hardness. It is also finding increased usage in pressuresensitive tape formulations. Phenolic resins encyclopedia of polymer science and. Low energy systems are stressed by resin customers in spite of cure. Based on phenolformaldehyde ratios, resole or novolac resins are obtained. Prolonged exposure not likely to cause significant irritating. Phenolic resin for refractory uses sumitomo durez company, ltd.
In fact, the impedance data resembled signatures for polyester resins and responded to temperature in a similar fashion. Sbhpp phenolic foam for floral application, is an open cell foam which allow absorption of a high amount of water that will be retained for a long time. Cas durez 12987 modified two step phenolic resin, m8576 proprietary msds toxicity property. A phenolic resin for refractory uses, consisting essentially of a liquid phenolic resole resin having a methylol group index of about 0. The global phenolic resins market size was valued at usd 11. May cause allergic skin reaction adverse human health effects eye. Phenolformaldehyde resin curing and bonding in steam. Phenolic resin market by type resol and novolac and by. A century of progress louis pilato editorphenolic resins. Improved preparation of densified wood reinforced with a resole phenolic resin is accomplished by impregnating wood with a solution of the resin in the presence of about 0. The most widely used phenolic resins for composites are resoles due to their lowviscosity. Sumitomo bakelite durez 23570 phenolic, injection grade.
Phenolic resins for friction materials sumitomo bakelite co. Pdf in this work two types of ligninnovolac resins have been formulated, partially substituting phenol by softwood ammonium lignosulfonate as filler. Development of vinyl ester resins with improved flame retardant properties for structural marine applications. In the transportation sector, there is a rise in demand for rubber and friction materials and has generated interest in durable phenolic compounds and lightweight, which is driving the growth. Tlc ingredients is very proud to be the north american distributor for durez corporation, a leader in highperformance, specialty phenolic resins. Part of the global sumitomo bakelite phenolic resin portfolio, durez is the industry leader in thermoset resins used in the adhesives, specialty coatings, abrasive, rubber and friction industries. Sbhpp phenolic resins are used as organic binders in foundry.
Synthesis of improved phenolic resins twenty seven addi ti on cured phenol ic resin compositions were prepared and tested for their abi 1 ity to give char residues comparable to stateof theart phenol ic resins. Phenolformaldehyde resins were the first completely synthetic polymers to be commercialized. Phenolic resins durez data sheet durez corporation resin number. Environmental considerations continue to grow in importance. Applications vary from commodity construction materials to high technology applications in electronics and aerospace. Sherry klein heitler cases posted with a 30000 identifier, i. If good tack is needed in a compound, it is best to get a true tackifying phenolic resin ask akrochem technical service for help in choosing a proper tackifying resin. Typical properties durez test methods are available upon request. Plenco phenolic resins for felt bonding applications exhibit low emission and odor levels. By further browsing on this website, you agree to our use of cookies.
The condensation reaction of phenol with acetone produces bisphenol a which is extensively used in polymer industries to synthesis various epoxide resins and polycarbonates. Phenolic resins are a family of polymers and oligomers composed of a wide range of structures based on the various reaction products of phenols with formaldehyde. Pdf evaluation of phenolic resins from onepot microwave synthesis. Jan 17, 1984 namely, all said additive incorporated resins are better than the solid resole type phenolic resin b alone in the curing characteristics of initiation and middle period. Application multicomponent, baked metalcoating formulations. Actually the alkylation of the phenolic resin does not play a role in the mechanical properties. The durez plant was built in 1970 and is now part of the sbhpp sumitomo bakelite high performance plastics division owned by sumitomo bakelite co. Hazards identification emergency overview light yellow liquid. A phenolresorcinolformaldehyde resin and a method for making the same is disclosed. We have several search tools, listed above, that give you more efficient methods to reach the information that you need.
261 129 295 1215 721 1474 1342 590 1435 201 175 9 753 270 434 481 543 269 963 558 916 641 31 8 1355 912 1068 63 670 1524 1185 725 685 821 958 511 1131 770 66 390 1379 664 652 59